Vincent J Fumo

Exelon's Philadelphia utility fulfills promises to customers, regulators

As Exelon Corp. continues to pursue Constellation Energy Group, the Chicago energy giant is pointing to a decade-old deal with a Philadelphia utility as a success that should reassure wary Marylanders — and regulators — about its intentions toward Baltimore's last Fortune 500 company.

Maryland officials, consumer advocates and others are not convinced that the proposed $7.9 billion Exelon-Constellation deal would benefit consumers and preserve local control of Baltimore Gas and Electric Co. On Monday, Maryland regulators will begin their review of the deal and hear from critics concerned about a range of issues from service levels to charitable contributions.

But in...